Robert Celestin Guinness1 
He was educated at Wellington College, Crowthorne, Berkshire, EnglandG.1 He gained the rank of Lieutenant in the Royal Fusiliers.1
Laetitia Antoinette Julia Tatjana Felicitas Prinzessin zu Waldeck und Pyrmont1
Dorothy Hilda Bingham1
Her married name became Hyem.1 From 1929, her married name became Guinness.
Richard Noel Guinness1 
Richard Noel Guinness usually went by his middle name of Noel.1 He was educated at Uppingham School, Uppingham, England.1 He graduated from Trinity College, Oxford University, Oxford, Oxfordshire, EnglandG, in 1893 with a Bachelor of Arts (B.A.)1 He was a practising solicitor.1 He was a partner of Guinness Mahon.1 He held the office of Justice of the Peace (J.P.) for County Dublin.1 He was Commissioner of Irish Lights.1 He was chairman of Guinness & Mahon in 1942.1
Children of Richard Noel Guinness and Mary Stokes
- Margaret Aideen Guinness2 b. 1895, d. 2 Dec 1973
- Henry Eustace Guinness+2 b. 22 Sep 1897, d. 19 Feb 1972
Margaret McPherson1
Her married name became Leadbetter.1
Child of Margaret McPherson and James Greenshields Leadbetter
- [S8966] Robert Bailey, “re: Bailey Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 6 April 2020. Hereinafter cited as “re: Bailey Family.”
Mary Stokes1 
From July 1894, her married name became Guinness.
Children of Mary Stokes and Richard Noel Guinness
- Margaret Aideen Guinness2 b. 1895, d. 2 Dec 1973
- Henry Eustace Guinness+2 b. 22 Sep 1897, d. 19 Feb 1972
- [S37] BP2003 volume 2, page 1697. See link for full details for this source. Hereinafter cited as. [S37]
- [S37] BP2003. [S37]
- [S8051] Oliver Wilson, “re: Babington Family,” family provided evidence then verified by subsequent research and verification by BENR (101053), 31 July 2016. Hereinafter cited as “re: Babington Family.”
- [S47] BIFR1976 page 530. See link for full details for this source. Hereinafter cited as. [S47]
Henry Eustace Guinness1 
He was educated at Winchester College, Winchester, Hampshire, EnglandG.1 He fought in the First World War.1 He gained the rank of Lieutenant in the Royal Artillery.1 He was a partner of Guinness Mahon & County.1 He held the office of Senator [Irish Free State].1 He was managing director of Guinness & Mahon in 1942.1
Children of Henry Eustace Guinness and Beatrice Maud Hill Boothby
- Anthony Peter Boothby Guinness+2 b. 11 Aug 1925, d. 24 Apr 2013
- John Henry Guinness+2 b. 10 Apr 1935, d. 29 Feb 1988
Colonel George Murray Boothby1 
He gained the rank of Colonel in the Royal Artillery.1
Children of Colonel George Murray Boothby and Ella Beatrice St. C. Crosse
- Aida Sophia Cunningham Boothby2 b. 15 May 1887
- George Augustus Bertie Cunningham Boothby2 b. 12 Jul 1889
- John Vivian Boothby2 b. 28 Sep 1890
- Beatrice Maud Hill Boothby+3 b. 14 Jul 1898
Beatrice Maud Hill Boothby1 
From 4 September 1924, her married name became Guinness.
Children of Beatrice Maud Hill Boothby and Henry Eustace Guinness
- Anthony Peter Boothby Guinness+3 b. 11 Aug 1925, d. 24 Apr 2013
- John Henry Guinness+3 b. 10 Apr 1935, d. 29 Feb 1988
Anthony Peter Boothby Guinness1 
Anthony Peter Boothby Guinness usually went by his middle name of Peter.1 He was educated at Eton College, Windsor, Berkshire, EnglandG.1 He was educated at Royal Naval College, Greenwich, London, EnglandG.1 He was Sub-Lieutenant, Royal Navy Volunteer Reserve.1 He fought in the Second World War, on minesweepers.1 He was educated at Trinity College, Cambridge University, Cambridge, Cambridgeshire, EnglandG.1 He was managing director of Guinness Mahon.1 He was deputy managing director of Arthur Guinness Son & Company Ltd in 1984.1 He lived in 2003 at Toad Hall, Little Missenden, Amersham, Buckinghamshire, EnglandG.1
Child of Anthony Peter Boothby Guinness and Rissa Parker
- Anthony Jack Guinness+2 b. 28 Nov 1949
Children of Anthony Peter Boothby Guinness and Susan Petronella Carbutt
- Christopher Jens Guinness2 b. 30 Aug 1957, d. 9 Oct 1992
- Lucinda Claire Guinness2 b. 1 Apr 1959
